deer plots - get 60HP+ 4WD, JD with cab, 2WD if well drained
moving/pulling stumps, other material - used, 40-60HP 4WD, with loader and no cab
orchards - small B series kubota, no cab
ponds - rent a big hoe

I would not even try to dig a pond with a tractor. Rent two big hoes
at $100/hr each, in 3 days they can dig you a half an acre pond, 20 ft deep.